//
//  XWDNSModel.m
//  DNS拦截
//
//  Created by Xie Wei on 2019/7/29.
//  Copyright © 2019 Xie Wei. All rights reserved.
//

#import "XWDNSModel.h"

@implementation XWDNSModel

static id _instance = nil;

+ (instancetype)shared {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _instance = [[self alloc] init];
    });
    return _instance;
}

@end
